Spoke to a lady today who has been searching local papers for years.
She told me they didn't do obituary's before 1900

The only nonconformist records I could see for the area around Sarah's birth.
Dyserth. Mynydd Seion Wesleyan. birth & baptisms. 1860 - 1955

Meliden. Salem Wesleyan. b&b 1856 - 1971.

Rhuddlan. Wesleyan. b&b 1860 - 1900.

Plenty of Chapels but they are the only ones with records covering Sarah's b&b

Paul.